Connected: An Internet Encyclopedia
RFC 1772 - A.2.1 Propagation of BGP Information via the IGP

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### A.2.1 Propagation of BGP Information via the IGP

While BGP can provide its own mechanism for carrying BGP information within an AS, one can also use an IGP to transport this information, as long as the IGP supports complete flooding of routing information (providing the mechanism to distribute the BGP information) and one pass convergence (making the mechanism effectively atomic). If an IGP is used to carry BGP information, then the period of desynchronization described earlier does not occur at all, since BGP information propagates within the AS synchronously with the IGP, and the IGP converges more or less simultaneously with the arrival of the new routing information. Note that the IGP only carries BGP information and should not interpret or process this information.

Next: A.2.2 Tagged Interior Gateway Protocol

Connected: An Internet Encyclopedia
RFC 1772 - A.2.1 Propagation of BGP Information via the IGP